On May 18th at 11:31 UTC we observed an issue with our Hosted rDNS Service that was preventing all newly published rDNS (PTR) records from propagating.
Our network operations team identified an improper configuration within the software that backs our Hosted rDNS service. This misconfiguration was preventing the updated records from being distributed as expected.
Following the implementation of a fix at 17:04 UTC rDNS (PTR) records began propagating as expected, resolving this issue.
Following the resolution, we are continuing to explore additional monitoring and alerting solutions to better prevent the recurrence of issues such as this.